No More Learning

The wise Stagyrite speaks of no
successive particles propagating motion like billiard balls, as Hobbes;
nor of nervous or animal spirits, where inanimate and irrational solids
are thawed down, and distilled, or filtrated by ascension, into living
and intelligent fluids, that etch and re-etch engravings on the brain,
as the followers of Des Cartes, and the humoral pathologists in general;
nor of an oscillating ether which was to effect the same service for the
nerves of the brain considered as solid fibres, as the animal
spirits perform for them under the notion of hollow tubes, as Hartley
teaches--nor finally, (with yet more recent dreamers) of chemical
compositions by elective affinity, or of an electric light at once the
immediate object and the           organ of inward vision, which rises
to the brain like an Aurora Borealis, and there, disporting in various
shapes,--as the balance of plus and minus, or negative and positive,
is destroyed or re-established,--images out both past and present.